Have you recently bought shoes and are you unsure if they are waterproof? Avoid wet socks and feet: grab your WD-40 spray can and spray it on the shoes. Make sure you keep the can at a distance of half a metre so that you do not get any moisture stains. Are you too late and do you have water and salt stains on your shoes? Spray a little WD-40 on the stains and wipe them clean with a cloth. Read on quickly to find out what else the spray can do!